package red.book._2._4;

import java.util.Arrays;

public class MainTest {
	public static void main(String[] args) {
		int[] arr = new int[] {1,0,3,2};
		int[] aco = new int[arr.length];
		for(int i = 0 ; i < arr.length; i++) {
			aco[arr[i]] = i;
		}
		System.out.println(Arrays.toString(aco));
	}
}
